I claim the ornamental design for a combined hollow paddle wheel shaft with paddle, as shown and described.
FIG. 1 is a perspective view of a combined hollow paddle wheel shaft with paddle, showing the new design in a first embodiment, with the shaft shown separately from the paddle;
FIG. 2 is a perspective view thereof shown in an environment of use;
FIG. 3 side view thereof;
FIG. 4 is another side view thereof;
FIG. 5 is a front view of the hollow octagonal paddle wheel shaft;
FIG. 6 is a perspective view of a combined hollow paddle wheel shaft with paddle, showing the new design in a second embodiment, with the shaft shown separately from the paddle;
FIG. 7 is a perspective view thereof shown in an environment of use.
FIG. 8 is another side view thereof; and,
FIG. 9 is another side view thereof.
The broken lines shown in FIGS. 1-9 are for illustrative purposes only and are not part of the claimed design.